ART ATTACK: Take a convivial tour of River North, West Loop and Fulton Market galleries during the Chicago Art Dealers Association's "First Thursdays" event. More than 20 art galleries participate in the after-hours fun, offering light bites and drinks. 5-7PM, free.
MAN'S BEST FRIEND: Come out in support of Chicago Canine Rescue at the organization's spring benefit tonight at Harry Caray's Tavern Wrigleyville. Enjoy an open bar, appetizers and a silent raffle during the event. 7-9PM, $20.
BACK ON HIS B.S.: Hip-hop clown prince Busta Rhymes returns with a new album, "Back On My B.S.," and a cross-country tour. He lands at the House of Blues tonight, with Ron Brownz and Red Cafe opening. 7:30PM, $26.50-$28. After the concert, head to The Underground for "Billy's Blog Launch Party," celebrating www.billydec.com, where Busta will appear and Mr. Mariah (a.k.a. Nick Cannon) will spin. 11PM-4AM, no cover, RSVP required at firstname.lastname@example.org.